skirt vs miniskirt

skirt and miniskirt both are nouns.

Word	Noun	Adjective	Verb	Adverb
skirt	Yes	No	Yes	No
miniskirt	Yes	No	No	No

As nouns, miniskirt is a hyponym of skirt; that is, miniskirt is a word with a more specific, narrower meaning than skirt:

skirt (noun)	miniskirt (noun)
a garment hanging from the waist; worn mainly by girls and women	a very short skirt
cloth covering that forms the part of a garment below the waist
informal terms for a (young) woman
(Fungi) a remnant of the partial veil that in mature mushrooms surrounds the stem like a collar

skirt (verb)	miniskirt (verb)
avoid or try to avoid fulfilling, answering, or performing (duties, questions, or issues)
extend on all sides of simultaneously; encircle
pass around or about; move along the border
form the edge of